Image analysis – Applications – Manufacturing or product inspection
Patent
1995-07-21
1998-02-10
Boudreau, Leo
Image analysis
Applications
Manufacturing or product inspection
382148, 382149, 382152, 348 92, G06K 900
Patent
active
057177805
ABSTRACT:
A checking apparatus for flat type display panels includes a multiple number of cameras used for picking up images of a check pattern that is generated by a check pattern generator in accordance with a check item and displayed on a liquid crystal panel and a high-speed image processor for processing the obtained image signal from the taken image so as to detect defects in accordance with the check item. Further, the apparatus is constructed such that, as to some check items, the area of the display panel is divided into a multiple number of sections and a multiple number of check patterns are displayed at the same time in respective sections to thereby perform checking on multiple check items simultaneously. Alternatively, the apparatus is constructed such that, checking as to some check items is performed by processing image signals obtained in only a previously designated part of the liquid crystal panel.
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Mitsumune Toshifumi
Tanaka Kengo
Tanaka Toshiaki
Boudreau Leo
Shalwala Bipin
Sharp Kabushiki Kaisha
Yokogawa ADS Corporation
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